Lustre cleanup and fix

Add fs-lustre module alias, silence lockdep and gcc warnings. All others are small libcfs or empty file cleanup patches.

Peng Tao (10):
      staging/lustre: remove empty file lustre/ptlrpc/nrs_orr.c
      staging/lustre: silence lockdep warning in ll_md_blocking_ast
      staging/lustre: llite: add module alias
      staging/lustre: clean up and remove libcfs/linux/linux-fs.c
      staging/lustre: cleanup and remove libcfs/linux/linux-fs.h
      staging/lustre: silence gcc build warning
      staging/lustre: remove empty file libcfs/linux/linux-sync.c
      staging/lustre: remove libcfs/linux/linux-utils.c
      staging/lustre: remove empty file libcfs/linux/linux-lock.c
      staging/lustre: clean up and remove libcfs/linux/linux-mem.c